This is the Rochester, NY subway, or what it could have been. Rochester is the smallest US city to have had a subway, and in a typical case of urban decay, it was abandoned in 1965 and is now one of many industrial ruins. The green line shows the original railway, the orange line shows proposed extensions. None of it ever got past the planning stage.
There are now plans to fill in the tunnels with dirt, utterly destroying this landmark of Rochester history!